820760

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^2\times {\mathrm{71}}^1$

素因数の和:116

約数の個数: 48

約数和(自身を含む): 1989360

約数和(自身を除く): 1168600

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 71, 85, 136, 142, 170, 284, 289, 340, 355, 568, 578, 680, 710, 1156, 1207, 1420, 1445, 2312, 2414, 2840, 2890, 4828, 5780, 6035, 9656, 11560, 12070, 20519, 24140, 41038, 48280, 82076, 102595, 164152, 205190, 410380, 820760]

約数ペア:

[(1, 820760), (2, 410380), (4, 205190), (5, 164152), (8, 102595), (10, 82076), (17, 48280), (20, 41038), (34, 24140), (40, 20519), (68, 12070), (71, 11560), (85, 9656), (136, 6035), (142, 5780), (170, 4828), (284, 2890), (289, 2840), (340, 2414), (355, 2312), (568, 1445), (578, 1420), (680, 1207), (710, 1156)]